Question: what is the {represents} for {North Atlantic Treaty} that has {signatory} as {Dean Acheson} ?
Paraphrase: what signature represents Dean Acheson regarding the North Atlantic Treaty?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q877399 p:P1891 ?s . ?s ps:P1891 wd:Q214758 . ?s pq:P1268 ?value}